For determining the Guide Number, what is the significance of the blue section of the ERG?

The blue section of the Emergency Response Guidebook (ERG) is critical because it contains the names of hazardous materials arranged in alphabetical order. This allows first responders to quickly locate specific substances involved in an incident, which is essential for determining the appropriate responses to potential hazards. Knowing the name of the hazardous material assists responders in understanding the risks associated with it and guides them in utilizing the correct procedures and protective measures.

The other sections of the ERG serve different purposes: one provides contact numbers for emergencies, another focuses on the harmful effects of various substances, and yet another gives guidance on disposal methods. However, the blue section's primary significance lies in its ability to identify hazardous materials, making it invaluable during emergency situations.